Operating systems

If operating systems ran airlines

DOS Airlines - Everybody pushes the airplane until it glides, then
jumps on and lets the plane coast until it hits the ground again, then push
again, jump on again and so on and so on.

MAC Airlines - All the stewards, stewardesses, captains, baggage
handlers and ticket agents look the same, act the same and talk the same. Every
time you ask questions about details, you are told you don't need to know, don't
want to know, and everything will be done without you even having to know so
just shut up.

OS/2 Airlines - To board the plane, you have your ticket stamped 10
different times by standing in 10 different lines. Then you fill out a form
showing where you want to sit and whether if should look and feel like an ocean
liner, a passenger train or a bus. If you succeed in getting on board the plane
and the plane succeeds in getting off the ground, you have a wonderful trip ...except
times when the rudder and flaps get frozen in position, in which case you have
time to say your prayers and get yourself prepared for the crash.

WINDOWS Airlines - The terminal is nice and colorful, with friendly
stewards and stewardesses, easy access to the plane and an uneventful takeoff.
Then the plane blows up without any warning whatsoever.

WINDOWS NT Airlines - Everyone marches out on the runway, says the
password in unison and forms the outline of a plane. Then they all sit down and
make a whooshing noise like a plane.

Windows95 Airlines - The captain has been announcing boarding plans
for about a year and as soon as it's ready you'll be told where you are going.
In the meantime you can stand at the window and crane your neck with reporters
from every magazine on the continent.

UNIX Airlines - Everyone brings one piece of the airplane with them
when they come to the airport. They all go out on the runway and put the plane
together piece by piece, arguing constantly about what kind of plane they are
building.